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Author: Andrew D. Gryska Publisher: ISBN: Category : Arctic grayling Languages : en Pages : 39
Book Description
Reports on a mark-recapture experiment which was conducted along a 9.0-km (5.5-mi) section of the Pilgrim River during August 2002 to estimate abundance and length and age composition of Arctic grayling, Thymallus arcticus.
Author: Andrew D. Gryska Publisher: ISBN: Category : Arctic grayling Languages : en Pages : 39
Book Description
Reports on a mark-recapture experiment which was conducted along a 9.0-km (5.5-mi) section of the Pilgrim River during August 2002 to estimate abundance and length and age composition of Arctic grayling, Thymallus arcticus.
Author: Tim Caro Publisher: Island Press ISBN: 159726959X Category : Nature Languages : en Pages : 394
Book Description
The vast scope of conservation problems has forced biologists and managers to rely on "surrogate" species to serve as shortcuts to guide their decision making. These species-known by a host of different terms, including indicator, umbrella, and flagship species-act as proxies to represent larger conservation issues, such as the location of biodiversity hotspots or general ecosystem health. Synthesizing an immense body of literature, conservation biologist and field researcher Tim Caro offers systematic definitions of surrogate species concepts, explores biological theories that underlie them, considers how surrogate species are chosen, critically examines evidence for and against their utility, and makes recommendations for their continued use. The book clarifies terminology and contrasts how different terms are used in the real world considers the ecological, taxonomic, and political underpinnings of these shortcuts identifies criteria that make for good surrogate species outlines the circumstances where the application of the surrogate species concept shows promise Conservation by Proxy is a benchmark reference that provides clear definitions and common understanding of the evidence and theory behind surrogate species. It is the first book to review and bring together literature on more than fifteen types of surrogate species, enabling us to assess their role in conservation and offering guidelines on how they can be used most effectively.
Author: John B. Branson Publisher: Department of Interior National Park Service Lake Clark National Park & Preserve ISBN: 9780979643217 Category : Bristol Bay (Alaska) Languages : en Pages : 264
Author: George Wuerthner Publisher: Foundations for Deep Ecology 3 ISBN: 9781610915588 Category : Nature Languages : en Pages : 0
Book Description
Is it time to embrace the so-called “Anthropocene”—the age of human dominion—and to abandon tried-and-true conservation tools such as parks and wilderness areas? Is the future of Earth to be fully domesticated, an engineered global garden managed by technocrats to serve humanity? The schism between advocates of rewilding and those who accept and even celebrate a “post-wild” world is arguably the hottest intellectual battle in contemporary conservation. In Keeping the Wild, a group of prominent scientists, writers, and conservation activists responds to the Anthropocene-boosters who claim that wild nature is no more (or in any case not much worth caring about), that human-caused extinction is acceptable, and that “novel ecosystems” are an adequate replacement for natural landscapes. With rhetorical fists swinging, the book’s contributors argue that these “new environmentalists” embody the hubris of the managerial mindset and offer a conservation strategy that will fail to protect life in all its buzzing, blossoming diversity. With essays from Eileen Crist, David Ehrenfeld, Dave Foreman, Lisi Krall, Harvey Locke, Curt Meine, Kathleen Dean Moore, Michael Soulé, Terry Tempest Williams and other leading thinkers, Keeping the Wild provides an introduction to this important debate, a critique of the Anthropocene boosters’ attack on traditional conservation, and unapologetic advocacy for wild nature.
Author: David Dudgeon Publisher: Cambridge University Press ISBN: 1108882625 Category : Nature Languages : en Pages : 517
Book Description
Growing human populations and higher demands for water impose increasing impacts and stresses upon freshwater biodiversity. Their combined effects have made these animals more endangered than their terrestrial and marine counterparts. Overuse and contamination of water, overexploitation and overfishing, introduction of alien species, and alteration of natural flow regimes have led to a 'great thinning' and declines in abundance of freshwater animals, a 'great shrinking' in body size with reductions in large species, and a 'great mixing' whereby the spread of introduced species has tended to homogenize previously dissimilar communities in different parts of the world. Climate change and warming temperatures will alter global water availability, and exacerbate the other threat factors. What conservation action is needed to halt or reverse these trends, and preserve freshwater biodiversity in a rapidly changing world? This book offers the tools and approaches that can be deployed to help conserve freshwater biodiversity.
Author: John W. Day, Jr. Publisher: John Wiley & Sons ISBN: 0471755672 Category : Science Languages : en Pages : 576
Book Description
Estuaries are among the most biologically productive ecosystems on the planet--critical to the life cycles of fish, other aquatic animals, and the creatures which feed on them. Estuarine Ecology, Second Edition, covers the physical and chemical aspects of estuaries, the biology and ecology of key organisms, the flow of organic matter through estuaries, and human interactions, such as the environmental impact of fisheries on estuaries and the effects of global climate change on these important ecosystems. Authored by a team of world experts from the estuarine science community, this long-awaited, full-color edition includes new chapters covering phytoplankton, seagrasses, coastal marshes, mangroves, benthic algae, Integrated Coastal Zone Management techniques, and the effects of global climate change. It also features an entriely new section on estuarine ecosystem processes, trophic webs, ecosystem metabolism, and the interactions between estuaries and other ecosystems such as wetlands and marshes
Author: Andrew D. Gryska
Author: Andrew D. Gryska
Author: Tim Caro
Author: William Francis Lynch
Author: John B. Branson
Author: Seamus Heaney
Author: George Wuerthner
Author: David Dudgeon
Author: Kevin G. Smith
Author: Andrew D. Gryska
Author: John W. Day, Jr.